Phase Changes, Phase Diagrams and Temperature Scales

What letter on the diagram represents the substance only in the gas phase?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

What letter on the diagram represents a substance only in the liquid?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

What letter on the diagram represents a substance only in the solid phase?

• A

• B

• C

• D

What letter on the diagram represents the triple point?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

What is it called when molecules change from a solid directly into a gas (skipping the liquid phase)?

• freezing

• melting

• sublimation

• evaporation

Tags

NGSS.MS-PS1-4

Label the states of matter and phase changes in the diagram.

g

f

h

i

e

d

c

Deposition

Vaporization

Condensation

Freezing

Liquid

Sublimation

Melting

Solid

Gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Label the arrows with the correct phase changes.

g

h

i

j

f

e

Liquification

Condensation

Sublimation

Freezing

Melting

Vaporization

Gasification

Deposition

Solidification

Evaporation

Tags

NGSS.MS-PS1-4

Where is freezing likely to take place in this model?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which point on the graph is where boiling is occurring?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Between which points is the temperature of the substance remaining constant?

• A-B only

• A-B, C-D, and E-F

• B-C only

• B-C and D-E

Tags

NGSS.MS-PS1-4